If you don't directly connect or peer with them, have you tried going through your upstream provider to get a trouble ticket referral for their NOC? AT&T has been very good about providing the secret code-word and telephone number to their direct inter-connects and peers in the past.
Does *anyone* have a contact number for someone that does not keep asking me if I'm running a Windows machine? Every number I have for them, connects me to some moron that has no clue when I say "It appears that someone from your network is attempting to flood our network". Asking to be connected to Security gets me an e-mail address and asking for a supervisor get me "He's not avainable" Whois on att.net get me a voice mailbox saying that they are closed on the weekends. -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation